|"When I consider your heavens, the work of your fingers, the moon and the stars which You have set in place, what is Man that You are mindful of him?" -- Psalm 8:3,4|
The final results of Processing (I.) and (II.) are
very similar, as the most critical processing in (II.) is
done with 3x32bit precission. The final results of (I.)
and (II.) are almost always BMP or JPG (to be able to
With this problem we meet during creating of final BMP or JPG image (e.g. conversion of internal K3CCDTools buffer into 24-bit BMP or conversion of 32-bit FIT to BMP). We can use various transformations between 32-bit and 8-bit values. K3CCDTools uses 3 types of transformations: Linear, Gamma and Logarithmic.
Here, there is an example of using Linear, Gamma and Logarithmic conversion of monochrome 16-bit FIT file into 8-bit grayscale BMP. The same principle is valid for color conversion - conversion is applied to each of R, G, B components. The image of Andromeda Galaxy was downloaded from Digitized Sky Survey server.
Computer generated images, real images, drawings and texts are property of the author and may not be reproduced or used without permission of author.
Last Update: 31.10.2002